Patents Assigned to Karmoy Winch A/S
  • Patent number: 6446568
    Abstract: A device stops and retains a clamp on a wire. The device is mounted above a surface, which is preferably a deck of a vessel. The device comprises a fork that can engage with the clamp. The fork has a pair of teeth defining an opening therebetween, and the opening has a bottom. The fork has a first effective locking height defined between the bottom and the surface and height intended for retaining a wire lying within a first size range. The fork also has a second effective locking height defined above the surface and intended for retaining a wire lying within a second size range which is smaller than said first size range. The second locking height is greater than the first locking height, relative to the surface. The fork includes at least one guide member for mounting and securing an insert, preferably U-shaped, in the opening between the fork teeth, said insert having a bottom defining said second locking height. Optionally, the fork teeth have holes through which a locking bolt can be inserted.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: September 10, 2002
    Assignee: Karmoy Winch A/S
    Inventor: Per Hystad
  • Patent number: 6003462
    Abstract: A device involving locking members (4, 5), so-called "flaps", for tow pins on a vessel, e.g., a tugboat, particularly for use with tow lines, towing wire, chains, or the like, where the tow pins are positioned in pairs at the stern of the vessel, optionally capable of being raised and lowered, for guiding the tow line or similar equipment therebetween, where each tow pin in a pair is provided to the top thereof with a respective projecting locking member (4, 5), and where each tow pin (1, 2) is pivotable to permit the locking members (4, 5) to be brought by rotation into locking position by covering the opening between the upper ends of the pins, thereby limiting the vertical movement of the tow line or similar equipment positioned between the tow pins. Each locking member (4, 5) in vertical section and in a transverse direction outward from its respective tow pin (1, 2) has approximately a U-shape.
    Type: Grant
    Filed: March 24, 1998
    Date of Patent: December 21, 1999
    Assignee: Karmoy Winch A/S
    Inventor: Serina Hystad
  • Patent number: 5482227
    Abstract: A device for a curved conductor pipe for a pull wire wherein the conductor pipe is provided along the inside thereof with a lining which has a material yield point that is higher than the compressive force that operates between the lining and the pull wire. The lining is equipped with a guide seat for the pull wire in order to distribute the compressive force from the pull wire over the lining.
    Type: Grant
    Filed: October 6, 1994
    Date of Patent: January 9, 1996
    Assignee: Karmoy Winch A/S
    Inventor: Per H. Hystad
  • Patent number: 5351430
    Abstract: A compensating device equipped with a hydraulic cylinder/piston arrangement as a damping member, and a sheave operatively connected with the cylinder and piston arrangement, and a hydraulic accumulator connected to the cylinder, for use on board a trawler vessel operating in autotrawl mode for dampening shock forces or alternating stresses on trawl pulling wire elements between the trawler vessel winch system and a bottom trawl.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: October 4, 1994
    Assignee: Karmoy Winch A/S
    Inventor: Per H. Hystad
  • Patent number: 5015178
    Abstract: A melting furnace has a supporting structure of thermostable steel, and an internal shell of common steel, serving as a contact area for the refractory lining of the furnace.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: May 14, 1991
    Assignee: Karmoy Winch A/S
    Inventor: Per H. Hystad